2 * arch/ppc/boot/simple/misc-mv64x60.c
4 * Relocate bridge's register base and call board specific routine.
6 * Author: Mark A. Greer <source@mvista.com>
8 * 2005 (c) MontaVista Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
14 #include <linux/config.h>
15 #include <linux/types.h>
17 #include <asm/mv64x60_defs.h>
19 extern struct bi_record *decompress_kernel(unsigned long load_addr,
20 int num_words, unsigned long cksum);
23 mv64x60_move_base(void __iomem *old_base, void __iomem *new_base)
27 if (old_base != new_base) {
31 #else /* Must be mv64[34]60 */
35 b = in_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE);
37 b |= ((u32)new_base >> (32 - bits));
38 out_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE, b);
40 __asm__ __volatile__("sync");
42 /* Wait for change to happen (in accordance with the manual) */
43 while (in_le32(new_base + MV64x60_INTERNAL_SPACE_DECODE) != b);
47 void __attribute__ ((weak))
48 mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
53 load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
54 void *ign1, void *ign2)
56 mv64x60_move_base((void __iomem *)CONFIG_MV64X60_BASE,
57 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
58 mv64x60_board_init((void __iomem *)CONFIG_MV64X60_BASE,
59 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
60 return decompress_kernel(load_addr, num_words, cksum);